Abstract: A motive power system includes a first energy storage, a second energy storage, an actuator, an internal combustion engine, an electric generator, a power transmission circuit, and circuitry. The circuitry is configured to control the power transmission circuit to charge at least the second energy storage via the electric generator. The circuitry is configured to control the power transmission circuit to charge the first energy storage with electric power supplied from the second energy storage when a first charge rate of the first energy storage is lower than a first threshold.

Abstract: A seal structure includes a seal body. The seal body is sandwiched between a case and a cover and provided between a space and fastening regions. The space is formed by the case and the cover. The case and the cover is fastened at the fastening regions to compress the seal body in a compression direction. The seal body includes first regions and second regions. The first regions correspond to the fastening regions. Each of the second regions is provided between one of the first regions and another of the first regions. Reaction force in the compression direction in the seal body located at the first regions is smaller than reaction force in the compression direction in the seal body located in the second regions.

Abstract: A drive apparatus includes a first power storage, a second power storage, an electric motor, a voltage booster, an electric device. The second power storage is superior to the first power storage in energy to weight density and is inferior to the first power storage in output to weight density. The electric motor is to be driven with power supplied from at least one of the first power storage and the second power storage. The voltage booster is to boost a voltage output from the first power storage. The voltage booster includes a switch to electrically connect or disconnect the first power storage to at least one of the electric motor and the second power storage. The electric device is provided between the first power storage and the voltage booster. The voltage output from the second power storage is higher than a guaranteed operating voltage of the electric device.

Abstract: A drive system includes a first energy storage, a second energy storage, a driver, and a controller. The first energy storage is charged and discharged. A first amount of heat is generated by charging and discharging the first energy storage. The second energy storage is charged and discharged. The second amount of heat is generated by charging and discharging the second energy storage and is smaller than the first amount of heat. The driver generates driving power to move an electrically powered vehicle with electric power supplied from at least one of the first energy storage and the second energy storage. The controller controls temperature of the first energy storage and temperature of the second energy storage with a coolant flowing inside the electrically powered vehicle. The first energy storage is cooled by the coolant before the second energy storage is cooled by the coolant.

Abstract: A motive power system includes a first energy storage, a second energy storage, an actuator, an internal combustion engine, an electric generator, a power transmission circuit, and circuitry. The circuitry is configured to control the power transmission circuit to charge at least the second energy storage via the electric generator. The circuitry is configured to control the power transmission circuit to charge the first energy storage with electric power supplied from the second energy storage when a first charge rate of the first energy storage is lower than a first threshold.

Abstract: A motive power system includes a first energy storage, a second energy storage, an actuator, an internal combustion engine, a power transmission circuit, and circuitry. At least the actuator drives a load in a charge-depleting mode using a first energy supplied from the first energy storage and/or the second energy storage according to a second charge rate. At least the internal combustion engine drives the load in a charge-sustaining mode using a second energy that is lower than the first energy and that is supplied to the actuator from the first energy storage and/or the second energy storage according to a first charge rate.

Abstract: A motive power system includes a first energy storage, a second energy storage, an actuator, an internal combustion engine, an electric generator, a power transmission circuit, and circuitry. The circuitry is configured to control the power transmission circuit to charge at least the second energy storage via the electric generator. The circuitry is configured to control the power transmission circuit such that only the first energy storage supplies electric power to the actuator for a predetermined period when a charge rate of the second energy storage is lower than a first threshold.

Abstract: A vehicle power source system includes: a high-voltage battery; a high-voltage system equipment having a DC-DC converter and a charger; and a cooling circuit having a high-voltage battery cooling unit for cooling the high-voltage battery, a DC-DC converter cooling unit for cooling the DC-DC converter, and charger cooling unit for cooling the charger. In the cooling circuit, the DC-DC converter cooling unit and the charger cooling unit are disposed in parallel on a downstream side of the high-voltage battery cooling unit.

Abstract: A vehicle power device includes a front battery module, a rear battery module, a battery case, and a cooling circuit. The cooling circuit includes a cooling pump, a front battery module cooler, a rear battery module cooler, and cooling internal piping. The battery case houses the front and rear battery modules and the cooling internal piping. Coolant from the cooling pump flows to outside of the battery case via the cooling internal piping. The cooling internal piping includes a branched section and a flow path. The branched section is provided between the front battery module and the rear battery module to branch the flow of the coolant to the front battery module cooler and to the rear battery module cooler. The flow path has one end connected to the branched section and another end passing through to outside of the battery case.

Abstract: A motive power system includes a first energy storage, a second energy storage, an actuator, an internal combustion engine, a power transmission circuit, and circuitry. The circuitry is configured to control the power transmission circuit in a charge-depleting mode such that the first energy storage supplies to the actuator a first electric energy that is stored in the first energy storage with a first charge rate range and the second energy storage supplies to the actuator a second electric energy that is stored in the second energy storage with a second charge rate range. The first charge rate range is larger than the second charge rate range.

Abstract: A power supply system includes a first energy storage, a second energy storage, a power transmission circuit, and circuitry. An electrical load is connected to the first energy storage and to the second energy storage via the power transmission circuit. The circuitry is configured to control the power transmission circuit such that the first energy storage charges the second energy storage and supplies electric power to the electrical load according to a demand of the electrical load when a charge rate in the second energy storage is lower than or equal to a first threshold. The circuitry is configured to control the power transmission circuit such that at least the first energy storage among the first energy storage and the second energy storage supplies electric power to the electrical load according to the demand when the charge rate is higher than the first threshold.

Abstract: A power supply system includes a power transmission electric circuit via which an electrical load is connected to a first energy storage and to a second energy storage. A first charge rate indicates a charge rate of the first energy storage. A second charge rate indicates a charge rate of the second energy storage. A ratio of a first electric power amount of an electric power to be supplied from the first energy storage to the electrical load and a second electric power amount of an electric power to be supplied from the second energy storage to the electrical load is changed in accordance with the first charge rate at least in a first mode among the first mode and a second mode. The second electric power amount in the second mode is smaller than the second electric power amount in the first mode.

Abstract: An electric storage device includes a first electric capacitor, a second electric capacitor, a converter, and a processor. The converter converts electric power transmitted between an external power system external to the electric storage device and at least one of the first electric capacitor and second electric capacitor. The processor is configured to control the converter to operate in at least one of a first mode and a second mode, the first electric capacitor continuously discharging electric power to the external power system in the first mode, the second electric capacitor discharging electric power to the external power system and being charged by the external power system, intermittently, to stabilize frequencies in the external power system in the second mode.

Abstract: A vehicle power supply system includes: a plurality of battery modules each having a plurality of high-voltage batteries; a case for accommodating the plurality of battery modules; and a cooling circuit having a radiator, a cooling pump, a plurality of battery cooling units for cooling the plurality of battery modules, the case being disposed below a floor panel. In the cooling circuit, the plurality of battery module cooling units are disposed in parallel; and a branch portion which is provided to an upstream side of the plurality of battery module cooling units and a merging portion which is provided to a downstream side of the plurality of battery module cooling units are provided inside the case.

Abstract: A vehicle adapted to improve cooling capacity and a carrying capacity of two types of batteries and implementing miniaturization of a system including the batteries, a battery unit and a battery carrying method of the vehicle are provided. The vehicle (1) includes a first power storage element (11), a second power storage element (12) with output weight density superior to that of the first power storage element (11), a motor (9) driven by at least one of electric powers of the first and second power storage elements (11) and (12), where the first and second power storage elements (11) and (12) are disposed outside a passenger compartment (5) and disposed under the passenger compartment (5) along a vertical direction, and the second power storage element (12) is disposed at a front end along a front and rear direction of the vehicle compared to the first power storage element (11).

Abstract: A power supply system includes a first energy storage, a second energy storage, a power transmission circuit, and circuitry. The circuitry acquires a request supply amount, a request output amount, and failure detection information. The circuitry controls the power transmission circuit in accordance with the at least one of the request supply amount and the request output amount such that a ratio of an amount of electric power supplied from or to the first energy storage and an amount of electric power supplied from or to the second energy storage is to be a first ratio in a normal operating. The circuitry controls the power transmission circuit in accordance with the at least one of the request supply amount and the request output amount such that the ratio is to be a second ratio which is different from the first ration in a partial failure state.

Abstract: A motor is to be driven with power supplied from at least one of a first energy storage and a second energy storage. The booster is to boost a first voltage output from the first energy storage such that the first voltage and a second voltage output from the second energy storage satisfy a first condition, a second condition, and a third condition. In the first condition, the second voltage does not exceed a withstand voltage limit of the motor. In the second condition, the second voltage is lower than or equal to a maximum boosted value to which the booster boosts the first voltage with a maximum boosting ratio. In the third condition, the second voltage is higher than or equal to a minimum boosted value to which the booster boosts the first voltage with a minimum boosting ratio.

Abstract: A power supply system includes a first energy storage, a second energy storage, a power transmission circuit, and circuitry. The circuitry is configured to acquire a remaining capacity and a temperature of the second energy storage. The circuitry is configured to determine a target remaining capacity range of the second energy storage in accordance with the temperature. The circuitry is configured to control the power transmission circuit to control power transmission among the electric load, the first energy storage, and the second energy storage such that the remaining capacity of the second energy storage is within the target remaining capacity range.

Abstract: A power supply system includes a first energy storage, a second energy storage, a power transmission circuit, and circuitry. The first energy storage outputs first output power to an electric load. The second energy storage outputs second output power to the electric load. The circuitry is configured to acquire a demand power to be supplied to the electric load. The circuitry is configured to acquire a remaining capacity value indicating remaining capacity in the second energy storage. The circuitry is configured to control the power transmission circuit to change a ratio of the first output power to the second output power to supply the demand power in accordance with the demand power and the remaining capacity value.

Abstract: A power supply system includes a first energy storage, a second energy storage, a power transmission circuit, and circuitry. The first energy storage outputs first output power to an electric load. The second energy storage outputs second output power to the electric load. The circuitry is configured to control the power transmission circuit to supply power from the first energy storage or from both of the first energy storage and the second energy storage to the electric load based on a demand power such that a first change in the first output power in accordance with a change in the demand power is lower than a second change in the second output power in accordance with the change in the demand power or a third change in an input power of the second energy storage in accordance with the change in the demand power.